Question

Poderiam me ajudar?
U= R
1/2 + 5/x² - 6 = 0

Answer 1

$\frac{1}{2} + \frac{5}{x^2} -6=0 \\ \\ \frac{5}{x^2} =6- \frac{1}{2} \\ \\ \frac{5}{x^2} = \frac{12}{2} - \frac{1}{2} \\ \\ \frac{5}{x^2} = \frac{11}{2} \\ \\ 2.5=11.x^2 \\ \\ x^2= \frac{10}{11} \\ \\ x= +/-\sqrt{ \frac{10}{11} }$

$x=+/- \frac{ \sqrt{10} }{ \sqrt{11} } \\ \\ x=+/- \frac{ \sqrt{10}. \sqrt{11} }{( \sqrt{11} )^2} \\ \\ x=+/- \frac{ \sqrt{110} }{11}$

                       S = { $- \frac{ \sqrt{110} }{11} , \frac{ \sqrt{110} }{11}$ }